Home / 15,835.20-21,844.80-13,502.40

Finding the Fourth Proportional to 15,835.20, 21,844.80 and 13,502.40

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Solution

The fourth proportional to 15,835.20, 21,844.80 and 13,502.40 is: 18,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.20 : 21,844.80 = 13,502.40 : x
  2. Step 2: Convert to fraction form
    15,835.20/21,844.80 = 13,502.40/x
  3. Step 3: Cross multiply
    15,835.20x = 21,844.80 × 13,502.40
  4. Step 4: Simplify right side
    15,835.20x = 294,957,227.52
  5. Step 5: Solve for x
    x = 294,957,227.52/15,835.20
  6. Step 6: Final answer
    x = 18,626.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.